Ions are defined as atoms that have lost or gained an electron and have a charge. atoms that are bonded to other atoms of the same element neutral atoms nuclear atoms

Ions are defined as atoms that have lost or gained an electron and have a charge.

Explanation: Ions are charged atoms. Ions can be negative or positive. When an atom looses one or more electrons, it becomes positively charged and a positively charged atom is called a cation. When an atom gains one or more electrons it becomes negatively charged and a negatively charged atom is called an anion.

the oxygenated blood then leaves the lungs through pulmonary veins, which return it to the left heart, completing the pulmonary cycle. this blood then enters the left atrium, which pumps it through the mitral valve into the left ventricle. from the left ventricle, the blood passes through the aortic valve to the aorta.

deoxygenated blood leaves through the right ventricle through the pulmonary artery. from the right atrium, the blood is pumped through the tricuspid valve (or right atrioventricular valve), into the right ventricle.